I would love to see Linton again too. After Lottie he was the one who was most interested in investigations and mysteries and I wonder if he has changed interests. Dunno if a relationship with Lottie would work, but it would be nice to see them working together again. The last time he appeared was in Ven/Tak and his bad temper had improved a lot thanks to Mildred. For some strange reason they had a good chemistry and her being a dangerous nut helped him to be better with the others.